Modules JEM_SODIMM200 and JEM_SODIMM200_SOM

Module JEM_SORDIMM200

Module JEM_DIMM240

Module JEM_DIMM184

Module JEM_UDIMM240-DDR3

Check for availability. This is moving fast

Popular devices include MT18JSF25672AZ — 2GB and MT18JSF51272AZ — 4GB

The primary function of the JTAG External Modules (JEM) for the DIMM/SODIMM Socket
Cluster Test is to provide test access to off-board signals that otherwise could
not be accessed by a JTAG test system and to strengthen the memory-independent JTAG
testing for the assembly correctness of the almost full spectrum of the modern socket types, particularly (according to JEDEC_Std.21-C):

For many designs, JTAG test has adequate access to on-board signals, but signals
that go off the board often cannot be tested. By adding JTAG access to memory socket
off-board signals, a JEM_DIMM/SODIMM™ module can increase the board's fault coverage,
possibly reducing the need for developing alternative tests to reach the required
test coverage level. The JEM_DIMM/SODIMM module provides a number of JTAG accessible
individually controlled test channels that can be used to control and observe signals
that go off the board.

The JEM_SODIMM200_SOM modules are specifically intended for usage with the Variscite SoM
sockets in order to enhance the testability (DFT) of the motherboards the Variscite SoM modules are working with these sockets.

The JEM_DIMM/SODIMM™ module provides full bi-directional JTAG controllability and
observability for all socket pins and is fully compatible with the following JTAG ATPG platforms:

Flynn Systems onTAP Series 4000

Corelis ScanExpress

JTAG Technologies ProVision

Asset ScanWorks

Goepel' CASCON

XJTAG' XJRunner

The ATPG tools of each of these JTAG test platforms can generate tests with the
advanced diagnostics for the socket pins failure detection, as well as sensing analog
voltages on the individual power pins (such as Vdd, Vddq, Vddspd and Vref). The
JEM_DIMM/SODIMM™ module TAP channel can be simply combined with any board TAP chain or used as a separate TAP. An advantage over other similar solutions is that the JEM_DIMM/SODIMM™ module connection setup
can be done either with an external TAP cable or completely in-circuit, without any cabling! The modules design is ready for cascading multiple DDR2/DDR3 memory socket testing. Each JEM_DIMM/SODIMM™ module features hot-swap capability.

Our JEM_DIMM/SODIMM™ module product line consists of almost full spectrum of the modern socket types, more than 20 types right now, each additional DDR2/DDR3 memory socket type is also accessible upon request.

JEM with external TAP cable

JEM without external TAP cable (completely in-circuit)

SORDIMM Socket on PCB

It's worthwhile to emphasize that the usage of any DIMM socket test modules of our competitors needs a customer have a merger software, because these DIMM modules are described by the netlist. In the contrary, we're giving the DIMM socket BSDL file instead, so there is no need to modify the BUT netlist.